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An Analysis of Radio Frequency Interferences in L-Band SAR Images

L-대역 SAR 영상에서의 간섭 신호 영향 분석

  • Lee, Seul-Ki (Department of Electronic Engineering and Avionics, Korea Aerospace University) ;
  • Lee, Woo-Kyung (Department of Electronic Engineering and Avionics, Korea Aerospace University) ;
  • Lee, Jae-Wook (Department of Electronic Engineering and Avionics, Korea Aerospace University)
  • 이슬기 (한국항공대학교 항공전자공학과) ;
  • 이우경 (한국항공대학교 항공전자공학과) ;
  • 이재욱 (한국항공대학교 항공전자공학과)
  • Received : 2012.09.25
  • Accepted : 2012.12.03
  • Published : 2012.12.31

Abstract

SAR(Synthetic Aperture Radar) systems can provide images of wide coverage in day, night, and all-weather conditions. However wideband SAR systems are known to be vulnerable to interferences from other devices operating at in-band or adjacent spectrums and this may lead to image corruptions. In this paper, a SAR point target simulator is developed that provides performance analysis on image distortion caused by interferences from other devices. Interference signals are generated based on the experimental data observed from acquired SAR raw data. Simulation results include typical SAR performance measures such as spatial resolution, peak to sidelobe ratio and integrated sidelobe ratio. Finally, SAR target simulations are performed and shown to correspond to the image corruptions found in real SAR missions affected by RF interferences.

Keywords

RFI;SAR;Interference;Jamming

Acknowledgement

Supported by : 방위사업청, 국방과학연구소

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